THEY ALSO AREN’T NECESSARY: We’re a Physician and Mathematician and a Data Scientist. N95s Won’t Work for Kids.

The Berkeley Unified School District (BUSD) in the SF Bay Area where we live, announced on Tuesday that it was planning on “transitioning all students and staff” to KN95 respirators. If worn properly, such respirators filter 95 percent of particles the size of those that carry the SARS-CoV-2 virus. The BUSD has proposed this measure as a means to slow the spread of COVID-19 and keep schools open. These respirators would be required for the entire school day, including outdoors during gym and recess.

Unfortunately, the effectiveness of respirators is vastly overestimated, and there is scant evidence that they stop community transmission. Moreover, NIOSH-approved respirators are tight, uncomfortable, and can impede breathing. OSHA requires both fit testing and a medical evaluation before workers can wear them. We’ve all seen images of health care workers with bruised faces from properly worn respirators.

This is legally-mandated child abuse.